Blizzard's Starcraft II: Herald of the Stars Protoss Expansion "Herald of the Stars will feature a revolutionary non-linear campaign. It can be played backwards, forwards, with any mission in any order, or not played at all, while still delivering the exact same life-affirming storyline."

You can actually get a hot dog (well, a picture of one [well, you can't actually get it]) in the playable game CalcMMO The world's first (and hopefully last) TI-83 Graphing Calculator themed massively multiplayer game!